Re: [Ntw-devel] Timers
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Re: [Ntw-devel] Timers
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From: Yua C. <ca...@gz...> - 2006-06-26 23:20:24
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gotcha. makes sense now. :)
it looks like the resetTimer callback for dlg is never called when the
dialog is destroyed. I had expected the DESTROY_EVENT or the DELETE_EVENT
would fire when I called ntw_widget_destroy().
Yua Ca Van
----- Original Message -----
From: "Ian Larsen" <dr...@gm...>
To: "Yua CaVan" <ca...@gz...>
Cc: "NTW Mailing List" <ntw...@li...>
Sent: Monday, June 26, 2006 6:01 PM
Subject: Re: [Ntw-devel] Timers
> Whoops,
>
> That callback declaration should be:
>
> void
> ping (struct ntw_event_data *edata, ntwWidget *userdata){
>
> }
>
> A pointer is passed to the event data, not the event data itself.
>
> -Ian
>
> On 6/26/06, Ian Larsen <dr...@gm...> wrote:
>> At first glance, it looks like you're omitting the event data
>> structure in your callback declaration.
>>
>> It should look like this:
>>
>> void
>> ping(struct ntw_event_data, ntwWidget *userdata){
>> //ping callback function
>> }
>>
>> The problem is that the helloworld.c example isn't clear that this is
>> the proper declaration for a callback function, you'd have to look at
>> ntwtest for that. I'll fix that in the docs so nobody else falls into
>> the same trap.
>>
>> By the way, the ntw_event_data structure looks like this:
>>
>> struct ntw_event_data {
>> int32 id;
>> int32 event;
>> int32 synchronized;
>> char data[];
>> }
>>
>> With the last char data[] being any applicable data that the client
>> sends back, such as the new text for an ENTRY_TEXT_CHANGED event, for
>> example.
>>
>> Hope that helps,
>> Ian
>>
>> On 6/26/06, Yua CaVan <ca...@gz...> wrote:
>> > I've modified the helloworld.c to add in a timer to test something out
>> > and
>> > realized that we don't have a clean way of closing out dialog
>> > windows...
>> >
>> > I've created a callback function called ping as well as setting the
>> > window
>> > and timer variables to static:
>> >
>> > static ntwWidget * pMainWnd; /* is the main window */
>> > static ntwWidget * pMainTimer; /* is the timer */
>> >
>> > void
>> > ping (ntwWidget * user_data) {
>> > ntwWidget *dlg;
>> > ntwWidget *layout;
>> > ntwWidget *label;
>> > ntwWidget *button;
>> > ntwWidget *btnLabel;
>> >
>> > dlg = ntw_dialog_new(
>> > pMainWnd, /* parent window */
>> > 100, /* width */
>> > 80, /* height */
>> > TRUE, /* Modality */
>> > "PING!!!!!" /* Title */
>> > );
>> >
>> > layout = ntw_grid_new(3,2,FALSE);
>> >
>> > ntw_container_add(dlg,layout);
>> >
>> > label = ntw_label_new("A timer event has just occured.\n"
>> > "Please click the OK button");
>> > ntw_grid_add(
>> > layout,
>> > label,
>> > 1,
>> > 2,
>> > 1,
>> > 2,
>> > 0,
>> > 0,
>> > 0,
>> > 0
>> > );
>> >
>> > button = ntw_button_new();
>> > btnLabel = ntw_label_new("OK");
>> >
>> > ntw_container_add(button,btnLabel);
>> >
>> > ntw_grid_add(
>> > layout,
>> > button,
>> > 1,
>> > 2,
>> > 2,
>> > 3,
>> > 0,
>> > 0,
>> > 0,
>> > 0
>> > );
>> >
>> > ntw_add_callback(button, BUTTON_CLICKED,
>> > (func_ptr)&closePing,dlg,ASYNC);
>> > ntw_add_callback(dlg, DESTROY_EVENT,
>> > (func_ptr)&resetPing,NULL,ASYNC);
>> > ntw_add_callback(dlg, DELETE_EVENT,(func_ptr)&resetPing,NULL,ASYNC);
>> >
>> > ntw_widget_show(dlg);
>> > }
>> >
>> > now, the dialog will pop up and the timer will be reset when the dialog
>> > is
>> > closed using the close button ( 'X' in the upper-right ), but the
>> > closePing
>> > function:
>> >
>> > void
>> > closePing(ntwWidget * user_data) {
>> > ntw_widget_destroy(user_data); /* should be dlg */
>> > }
>> >
>> > seems to destroy the BUTTON, rather than the dialog even though dlg's
>> > pointer is the user data. Any clues?
>> >
>> > for completeness, here's resetPing:
>> >
>> > void
>> > resetPing() {
>> > ntw_timer_reset(pMainTimer);
>> > }
>> >
>> > and the timer is set up as:
>> > ...
>> > pMainTimer = ntw_timer_add(10 /* seconds */,ASYNC);
>> > ntw_timer_set_callback(pMainTimer, (func_ptr)&ping, timer);
>> >
>> > Yua Ca Van
>> > ----- Original Message -----
>> > From: "Ian Larsen" <dr...@gm...>
>> > To: "Yua CaVan" <ca...@gz...>
>> > Cc: "NTW Mailing List" <ntw...@li...>
>> > Sent: Monday, June 26, 2006 2:21 PM
>> > Subject: Re: [Ntw-devel] Timers
>> >
>> >
>> > > Oh yeah...thanks. Done. :-)
>> > >
>> > > -Ian
>> > >
>> > > On 6/26/06, Yua CaVan <ca...@gz...> wrote:
>> > >> You need to update the Makefile.mingw for the Server and Client to
>> > >> add
>> > >> timer.o to the list of objects to be compiled. :)
>> > >>
>> > >> Yua Ca Van
>> > >> ----- Original Message -----
>> > >> From: "Ian Larsen" <dr...@gm...>
>> > >> To: "NTW Mailing List" <ntw...@li...>
>> > >> Sent: Sunday, June 25, 2006 2:38 PM
>> > >> Subject: [Ntw-devel] Timers
>> > >>
>> > >>
>> > >> > All,
>> > >> >
>> > >> > I've added a timer widget to the C server and client. The latest
>> > >> > is
>> > >> > in CVS. It seems to work well, but I haven't tested it very much
>> > >> > yet.
>> > >> >
>> > >> > The code is in the files timer.c and timer.h, in both the Client
>> > >> > and
>> > >> > Server directories.
>> > >> >
>> > >> > -Ian
>> > >> >
>> > >> > Using Tomcat but need to do more? Need to support web services,
>> > >> > security?
>> > >> > Get stuff done quickly with pre-integrated technology to make your
>> > >> > job
>> > >> > easier
>> > >> > Download IBM WebSphere Application Server v.1.0.1 based on Apache
>> > >> > Geronimo
>> > >> > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> > >> > _______________________________________________
>> > >> > Ntw-devel mailing list
>> > >> > Ntw...@li...
>> > >> > https://lists.sourceforge.net/lists/listinfo/ntw-devel
>> > >> >
>> > >> >
>> > >>
>> > >>
>> > >>
>> > >
>> > >
>> >
>> >
>> >
>>
>
>
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